The Booted Eagle is an elegant raptor, known for its narrow wings and ability to move quickly through the air. Found mainly in Europe, Asia, and the Middle East, this eagle is often seen hunting small mammals and birds in open landscapes such as meadows or fields. While it is smaller than other eagles, its agile flight and hunting technique make it an impressive bird. During courtship displays, the Booted Eagle performs aerial acrobatics, where males dive in spirals before quickly climbing to attract the attention of females.

The Black-and-white Hawk-Eagle is an elegant forest raptor of tropical America, measuring between 51 and 61 cm in length with a wingspan of 110 to 135 cm. It is distinguished by its contrasting plumage: white head, neck, and underparts; black wings and back; and a tail barred with black and white. A small black crest adorns its head, and a black band crosses its yellow eyes. This predator inhabits humid tropical forests, forest edges, and open woodlands from southern Mexico to northern Argentina. It primarily hunts arboreal birds like toucans and parrots, but also preys on mammals, reptiles, and amphibians. Although listed as Least Concern by the IUCN, it is sensitive to deforestation and habitat fragmentation.

The black-browed albatross is a large seabird in the family Diomedeidae, measuring 90–100 cm in length with narrow wings spanning 200–230 cm, and characterized by a pale head marked by black brow streaks. It inhabits temperate to subantarctic oceanic waters and coastal areas, feeding mainly on fish and squid captured at the surface or by shallow dives, and breeds in large colonies on subantarctic islands. During the breeding season, pairs nest on coastal cliffs or grasslands and lay a single egg.

The Blue Anole is a small arboreal lizard, measuring approximately 13 to 15 cm in total length. It is notable for its uniform bright blue coloration, unique among reptiles. Males have a pure white dewlap. This species is endemic to Gorgona Island, off the coast of Colombia, where it inhabits the canopy of humid tropical forests. It is diurnal and primarily insectivorous. Reproduction is oviparous, with eggs laid on vegetation surfaces. Classified as Near Threatened by the IUCN, the species is vulnerable due to its limited distribution and deforestation.

The Blue-and-yellow Macaw, or Ara ararauna, is a striking parrot native to the tropical forests of South America. Known for its vibrant blue plumage and bright yellow belly, this bird is a symbol of Amazonian biodiversity. Measuring about 86 cm in length, it has a strong beak suited for consuming nuts and fruits. Sociable and intelligent, the Blue-and-yellow Macaw lives in groups and communicates through a variety of calls. It plays a crucial role in seed dispersal, aiding forest regeneration. Unfortunately, it is threatened by deforestation and illegal trade, although conservation efforts are underway to protect its natural habitat.

Blainville's beaked whale is a little-known species of beaked whale, primarily inhabiting the deep waters of the Atlantic and Pacific Oceans. It is easily recognized by its long, narrow rostrum. This species is difficult to observe due to its deep-ocean habitat and migratory habits. The Blainville's beaked whale is still poorly studied but is threatened by pollution, ship collisions, and underwater noise.

The Blue Whale is the largest animal ever known to have existed on Earth. This impressive cetacean can grow up to 30 meters long and weigh as much as 180 tons. Its gray-blue skin and streamlined body are perfectly adapted to ocean life, and despite its enormous size, the Blue Whale primarily feeds on small marine organisms such as krill, which it consumes in large quantities. Using its massive tongue and enormous mouth, it can swallow up to 4 tons of krill in a single gulp. Unfortunately, although once abundant, the Blue Whale is now classified as an endangered species due to commercial whaling, which has significantly reduced its population. Conservation efforts are now in place to protect this majestic creature.

The Black-tailed Godwit is an elegant wader, easily recognizable by its long, slightly curved bill and long legs. It primarily inhabits wetlands and estuaries in Europe, Asia, and North Africa, where it feeds on aquatic invertebrates, worms, and insects, which it detects in the soft sediments along the shores. The Black-tailed Godwit is also known for its long migration, covering great distances between its breeding grounds in temperate regions and its wintering sites in warmer areas. During the breeding season, males perform spectacular courtship displays, flying gracefully and emitting distinctive calls to attract females.

The Bar-tailed Godwit is a remarkable wader, easily recognized by its distinctive plumage, which varies from reddish-brown to gray and white, and its long, slightly downward-curved bill. It primarily inhabits coastal areas and wetlands in Europe and Asia, where it feeds on small marine invertebrates, mollusks, and insects, which it detects in the sediment. The Bar-tailed Godwit is a migratory bird, covering great distances between its breeding grounds in the Arctic regions and its wintering areas in more temperate zones. During the breeding season, the Bar-tailed Godwit engages in particularly interesting nesting behavior, establishing nests on the ground in grasses or boggy areas.

The Beluga is a remarkable cetacean, easily recognizable by its immaculate white color and streamlined shape. Unlike many other dolphins, the Beluga has a rounded forehead, called a "melon," which allows it great head flexibility. What also makes the Beluga unique is its ability to produce a wide variety of sounds, which it uses to communicate and navigate in the cold waters of the Arctic seas, the North Atlantic, and rivers. It primarily feeds on fish, crustaceans, and mollusks, hunting them with its excellent echolocation ability. Belugas live in social groups called "pods" and are known for their social behavior and interaction with humans. Despite its popularity, the Beluga is vulnerable to water pollution and climate change, which affect its natural habitats.

The Black-crowned Night Heron is a medium-sized bird, easily recognized by its silver-gray plumage and piercing yellow eyes. It primarily inhabits marshes, estuaries, and lake shores in Europe, Asia, and North Africa. This nocturnal bird is an excellent fisherman, feeding on fish, crustaceans, and invertebrates, which it captures with its strong, pointed bill. Unlike many other aquatic birds, the Black-crowned Night Heron is primarily active at dusk, searching for food in the darkness. The Black-crowned Night Heron is a social bird, forming colonies for breeding, but it prefers a quiet and hidden environment. While not directly threatened, it faces risks from water pollution and the destruction of its natural habitats.

The binturong is an arboreal mammal with a stocky body and long prehensile tail. Its shaggy black fur and unique scent reminiscent of popcorn make it easily identifiable. Active at night, it moves slowly through the canopy of Southeast Asian rainforests in search of fruits, small animals, and eggs. Solitary and elusive, it is increasingly rare due to habitat loss.

The Boa constrictor, also known as the Emperor Boa, is a medium to large-sized snake, easily recognized by its smooth scales and complex pattern of brown and golden spots and bands. It primarily inhabits the tropical forests of Central and South America, where it hides in foliage or tree trunks, using its climbing skills to hunt and conceal itself. This non-venomous snake is a constrictor, meaning it kills its prey by wrapping around it tightly before swallowing it whole. The Boa constrictor is generally a solitary animal, and while it is an effective predator, it primarily feeds on small mammals, birds, and occasionally reptiles. It is also popular in captivity, but like many reptiles, it is threatened by deforestation and habitat loss.

The Bongo is a large forest antelope native to Central Africa, recognized for its beautiful white stripes and bright orange coat. It primarily lives in dense forests, where it feeds on leaves, fruits, and bark. This antelope is usually solitary or lives in small family groups. Due to habitat loss and hunting, the Bongo is classified as a vulnerable species. Its discretion and ability to blend into its environment make it a difficult animal to spot.

The black-fronted duiker is a species of duiker, a small antelope found in the dense forests of West and Central Africa. It is easily recognizable by its distinctive black flanks and small size. This species is primarily herbivorous, feeding on fruits, leaves, and young shoots. While generally discreet and difficult to observe, it is threatened by deforestation and hunting. Its population is declining.

The black duiker, or Cephalophus niger, is a small African antelope primarily found in the dense forests of West Africa. It is characterized by its dark, nearly black coat and compact size, measuring about 50 cm at the shoulder and weighing between 15 to 20 kg. Both sexes have short, slightly curved horns. Adapted to life in the undergrowth, it feeds mainly on fruits, leaves, and young shoots. Its discreet behavior and ability to slip through dense vegetation make it difficult to spot. It is often solitary, although pairs can sometimes be seen.

The Black-backed Jackal, also known as the silver-backed jackal, is a small canid native to Africa, particularly found in savannas and open grasslands. It is distinguished by its grayish coat with a black stripe running along its back, hence the name "black-backed". This coat helps it blend effectively into its environment. The Black-backed Jackal has a slender body and relatively long legs, allowing it to run at high speeds. An opportunistic carnivore, it primarily feeds on small mammals, birds, insects, and carrion, but it can also eat fruits and plants. Although it is a solitary animal, the Black-backed Jackal can occasionally be seen in small groups, especially during the breeding season. While its status is not particularly threatened, it faces competition from other predators and the loss of its natural habitat.

The black-backed jackal, or Canis mesomelas, is a medium-sized canid easily recognized by its distinctive coat. It features a black back contrasting with the rest of its body, which is usually tawny or grayish. This opportunistic predator is primarily nocturnal, although it can be active at dusk. It inhabits various environments, from savannas to semi-desert areas. The black-backed jackal is a social animal, often seen in pairs or small family groups. Its communication relies on a variety of vocalizations, including howls and barks. Although wary of humans, it adapts well to human-modified environments.

The black-footed cat, Felis nigripes, is one of Africa's smallest felines, measuring about 36 to 52 cm in length with a tail of 13 to 20 cm. It weighs between 1 and 2.5 kg. Its coat is spotted with black on a tawny background, allowing it to blend effectively into the dry grasses of its natural habitat. This feline is primarily nocturnal and solitary, hunting small rodents and birds. It is known for its tenacity and aggressiveness, capable of taking on prey larger than itself. Although rarely seen, it plays a crucial role in the ecosystem by regulating small animal populations.

The black-tailed prairie dog is a small social ground squirrel about 30 cm long with sandy-brown fur and a black-tipped tail, living in dense burrow colonies on North American grasslands. It feeds on grasses, roots and seeds. During the breeding season, males actively defend territories with alarm calls and erect postures.

The Barred Owl is a large nocturnal raptor, easily identifiable by its circular face forming a facial disc and its large yellow eyes. Its plumage is primarily gray-brown, marked with dark streaks on the head, back, and wings, from which it gets its name. This owl has a robust, stocky body, with broad wings and silent flight, perfectly suited to its nocturnal hunting in forests. It primarily inhabits mixed and deciduous forests, especially in regions of North America. The Barred Owl hunts small mammals like rodents, birds, and occasionally insects, which it captures using its ability to fly silently. It is a solitary predator, hiding during the day in tree cavities or abandoned nests of other animals. While its population remains stable, the Barred Owl is vulnerable to disturbances in its natural habitat, such as deforestation and urbanization. It is protected in many regions to preserve its forest habitats.

The Black Stork is a large bird with dark, glossy plumage, characterized by its slender silhouette and long red legs and beak. Its plumage is primarily black, with a slight greenish tint and a metallic sheen on the wings and back. This migratory raptor is distinguished from its cousin, the White Stork, by its more discreet behavior and preference for wilder habitats. It primarily inhabits dense forests, wetlands, and mountainous areas of Eastern and Southeastern Europe and Asia. The Black Stork primarily feeds on fish, amphibians, and small mammals, which it catches with its long beak while moving silently near rivers and lakes. Unlike the White Stork, it prefers isolated habitats, avoiding human areas. Its population has long been in decline due to deforestation, illegal hunting, and disturbance of its breeding habitats. However, conservation efforts have helped stabilize its populations in some regions.

The Cavia aperea, commonly known as the Brazilian Guinea Pig, is a small rodent native to South America. Often mistaken for the domestic guinea pig, it is a distinct species. This modest-sized rodent has a stocky body, short ears, and a brownish coat that helps it blend into its natural surroundings. It primarily inhabits grasslands, savannas, and open forests, where it feeds on a variety of vegetation. The Brazilian Guinea Pig is a social animal that lives in groups and communicates through a series of vocalizations. Although mainly diurnal, it can also be active at dusk. Its ability to adapt to various habitats makes it a resilient species.

The Blue-tailed Emerald, or Chlorostilbon mellisugus, is a small bird with vibrant, metallic green plumage and a distinctive bluish tail. It has a slender, slightly curved bill, perfect for feeding on flower nectar. This hummingbird is widespread in South America, inhabiting various environments from tropical forests to urban gardens. Known for its rapid and agile flight, it often produces characteristic buzzing sounds. Males are particularly territorial, vigorously defending their feeding areas. The breeding season varies by region, but nests are typically constructed with plant materials and spider webs.

The White-fronted Damalisque is a medium-sized antelope, recognizable by its reddish-brown coat and the distinctive white band that crosses its forehead, which gives it its name. It stands between 1.30 and 1.50 meters tall at the withers and weighs between 50 and 70 kg. This mammal primarily inhabits open savannas, grasslands, and semi-desert areas, preferring open terrain where it can graze on grasses, leaves, and stems. It is well adapted to heat and drought, thanks to its short coat and behavior of seeking shade during the hottest parts of the day. The White-fronted Damalisque lives in small groups, often consisting of females and young, while adult males usually live alone or in small groups. It is mainly active in the morning and late afternoon, when it is easier to feed while avoiding the heat of the day. While the species is currently in good health, it faces threats such as illegal hunting, habitat loss due to human expansion, and competition with livestock for food resources.

The Blue Poison Dart Frog, scientifically known as Dendrobates azureus, is a small, brightly colored frog native to the rainforests of Suriname. Its vivid blue skin is dotted with black spots, making it easily recognizable. This bright coloration serves as a warning to potential predators, as it secretes potent toxins through its skin. Measuring about 3 to 4 cm in length, this species is diurnal and spends most of its time hunting small insects. It is often found in humid areas, near streams and ponds. Although its natural habitat is limited, it is popular in the pet trade, leading to conservation efforts to protect its wild populations.

The Dendrobates tinctorius, also known as the Blue Poison Dart Frog, is a vibrant species of toxic frog native to the humid tropical forests of South America, primarily in Guyana, Brazil, and Suriname. This frog is easily recognizable by its bright blue color, which serves as a warning to predators of its toxicity. Dendrobates tinctorius are primarily insectivorous and feed on small insects. Their bright color comes from the toxins of the insects they consume in their natural habitat. In captivity, they are not toxic as their diet changes. This frog is also known for its discreet behavior and primarily nocturnal habits.

The black-bellied whistling duck is a whistling duck in the family Anatidae, 47–56 cm long, with a long neck, pink bill and grey-brown plumage. It inhabits shallow freshwater ponds, marshes and lakes, feeding on seeds, aquatic plants and small invertebrates. Gregarious and cavity-nesting, it breeds colonially in tree hollows or nest boxes.

The Cephalophus monticola, commonly known as the blue duiker, is a small mammal from the Bovidae family. It is one of the smallest antelopes, standing about 30 to 40 cm tall at the shoulder and weighing between 3 and 6 kg. Its coat is typically reddish-brown with shades of gray, allowing it to blend effectively into its natural habitat. It is primarily nocturnal and crepuscular, feeding on leaves, fruits, and flowers. The blue duiker is solitary or lives in small family groups. It is very shy and uses its agility to escape predators. It is mainly found in dense forests and wooded areas of Central and East Africa.

The bearded dragon (Pogona vitticeps) is a medium-sized diurnal lizard (20–60 cm total length, including tail) with a broad triangular head and spiny scales around its throat. Native to central Australia’s arid regions, it inhabits savannas, rocky outcrops and semi-desert areas, feeding on insects, small vertebrates and plant matter. During the breeding season (September 1–February 28), males bob their beards and perform lateral shuffles to court females, which lay clutches of 15–30 eggs buried in sand. Hatchlings emerge between November 15 and April 15 after a 60–75-day incubation.